IMPRESS guests at your barbecue with these succulent lamb burgers, also perfect for simple suppers

The chefs at Gourmet Burger Kitchen share one of their recipes exclusively with Express.co.uk.

MINTED LAMB BURGER WITH FETA, TOMATO JAM, SALAD AND AIOLI

To make the burgers:

1kg minced lamb (it is best not to use lean mince as fat will help to bind the burgers and keep them moist)

3-4 shallots, very finely chopped

2 cloves garlic, crushed

1tsp ground cumin

20g fresh mint, chopped

1/2tsp ground black pepper

1tsp salt

1. Place the lamb mince in a large bowl and add the remaining ingredients. Mix it all together until just combined. This is best done by hand but don't over-work the mixture.

2. Shape the mixture into 6 burgers about 180g each. 3. The burgers can be cooked either on a griddle pan or non-stick frying pan but nothing beats the barbeque. Burgers need about 4 min each side, turning them every 2 minutes to cook them evenly and prevent burning.

For the tomato jam:

750g tomatoes - a mixture of beef & plum works best.

100g sugar

1 orange - zest and juice

1 lemon - zest and juice

1 star anise

1/2tsp black pepper

1/2tsp coriander seeds

1/2tsp juniper berries

2 cardamom pods

2 cloves

1/2tsp vanilla extract

1tsp salt

1. Cut the tomatoes in half and scrape out the seeds. Chop into rough chunks and put into a heavy based pan.

2. Place all spices into a frying pan and toast on a medium heat until fragrant. Cool and then grind in a pestle and mortar or spice grinder.

3. Add ground spices, sugar, vanilla, lemon & orange zest and juice.

4. Heat slowly on a low heat until sugar has dissolved, then cook on a medium heat stirring regularly. Because of the sugar content be careful it doesn't burn, if it's bubbling too much turn the heat down.

5. Cook for about 45min-1hr. When it's done the jam should coat the back of a wooden spoon nicely.

6. Remove from the heat, check seasoning and cool.

This will keep well in the fridge for 2-3 weeks or you can preserve in jars as you would for normal jam. I find it delicious on cheese sandwiches and never lasts long in the fridge at home.

Gourmet Burger Kitchen has launched its new lunch campaign, which promises to serve your lunch in just 15 minutes, or your next one for free. Enjoy a tasty 4 oz burger for just £5.95, Monday to Friday until 5pm. The 15-minute lunch deal is exclusive to St Paul's, Canary Wharf and Waterloo. See gbk.co.uk.